Method and system for engine and machine control
AssigneeCaterpillar Inc.
InventorsAndrew C. Jensen, Sylvain J. Charbonnel
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Abstract
A mobile machine control method includes receiving, by a single controller, a first request for movement of the machine by a ground-engaging device, receiving, by the single controller, a second request for movement of an implement system of the machine, and determining, with the single controller, an amount of desired power from an engine to satisfy the first request and the second request. The method also includes selecting an engine speed from a plurality of candidate engine speeds to produce the desired power and operating the engine at the selected engine speed to produce the desired power.
Claims20
A mobile machine control method, comprising:
- receiving, by a single controller, a first request for movement of the machine by a ground-engaging device;
- receiving, by the single controller, a second request for movement of an implement of the machine;
- determining, with the single controller, an amount of desired power from an engine to satisfy the first request and the second request;
- generating, by the single controller, a series of commands to adjust an engine, a hydraulic system, and a transmission to satisfy the first request and the second request;
- selecting, using a model-based predictive control technique, an engine speed from a plurality of candidate engine speeds to produce the desired power;
- and
- operating the engine at the selected engine speed to produce the desired power, wherein the engine is operated at the selected engine speed without the use of an engine speed governor.
A machine control method, comprising:
- receiving, by a single machine and engine controller:
- requests for movement of the machine and for movement of an implement;
- and
- feedback signals indicative of a movement of the machine and a movement of the implement;
- evaluating, by the single machine and engine controller, sets of candidate output commands for a transmission system and a hydraulic system to satisfy the requests and to satisfy feedback signals, the sets of candidate output commands being associated with a plurality of candidate engine torques;
- determining an engine torque, using a model-based predictive control technique, based on the requests for movement from the plurality of candidate engine torques;
- and
- generating an engine command associated with the engine torque without the use of an engine torque governor, based on the received requests and feedback information.
A machine control system, comprising:
- a ground-engaging traction device;
- an internal combustion engine;
- a transmission connected between the internal combustion engine and the ground-engaging traction device;
- a hydraulically-actuated implement;
- and
- a machine and engine controller configured to:
- receive a first request for movement of the ground-engaging traction device,
- receive a second request for movement of the implement,
- select an engine speed, using a model-based predictive control technique, from a plurality of candidate engine speeds based on a predicted power output necessary to satisfy the first request and the second request, and
- generate commands to operate the internal combustion engine at the selected engine speed, to control the hydraulically-actuated implement, and to control the transmission.
Dependencies are inferred from the claim text.